27602772469 has 2 divisors, whose sum is σ = 27602772470. Its totient is φ = 27602772468.

The previous prime is 27602772427. The next prime is 27602772563. The reversal of 27602772469 is 96427720672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25328722500 + 2274049969 = 159150^2 + 47687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27602772469 is a prime.

It is a super-2 number, since 2×27602772469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27602775469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13801386234 + 13801386235.

It is an arithmetic number, because the mean of its divisors is an integer number (13801386235).

Almost surely, 2^27602772469 is an apocalyptic number.

It is an amenable number.

27602772469 is a deficient number, since it is larger than the sum of its proper divisors (1).

27602772469 is an equidigital number, since it uses as much as digits as its factorization.

27602772469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 52.

The spelling of 27602772469 in words is "twenty-seven billion, six hundred two million, seven hundred seventy-two thousand, four hundred sixty-nine".